Roller particularly for use in textile machinery



April 18, 1933.

ROLLER PARTICULARLY FOR USE IN TEXTILE MACHINERY Filed Nov. 8', 1950 2Sheets-Sheet 1 H. MQGHEE 1,904,498

April 18, 1933. MCGHEE 1,904,498

ROLLER PARTICULARLY FOR USE IN TEXTILE MACHINERY Filed Nov. 8, 1950 2Sheets-Sheet 2 Patented Apr. 18, 1933 UNITED STATES PATENT OFFICE HENRYMCGHEE, OF RUSHCUTTERS BAY, NEAR SYDNEY, NEW SOUTH WALES,

AUSTRALIA i ROLLER PARTICULARLY FOR USE IN TEXTILE MAGHINERY Applicationfiled November 8, 1930, Serial No. 494,423, and in Great BritainNovebiner 26, 1929.

This invention relates to improvements in and connected with rollers andis concerned more particularly with rollers for use in machinery forspinning, drawing, pressing '5 or twisting textiles, such as jute. Theinvention has for its object the provision of rollers which can becheaply produced and yet have a long life associated with a reliable andefficient operation during service.

According to the invention the bearing, carrying or rolling surface of aroller is constituted by a sleeve or ring of leather which is attachedto an inner sleeve or sleeves of rubber by a. vulcanization process.This process is conveniently carried out in a mould which comprisessuitable cooling means for preventing the high temperature involved inthe vulcanization from injuring the leather. The rubber sleeve, whichmay be suitably of soft rubber, is conveniently united during thevulcanization process to an inner lining of hard material, such asfibre, ebonite orhard rubber and to an outer ring or rim of leatherforming the wearing surface. The hard rubber lining provides a desirablebearing for the mounting of the composite band on the roller, whilst thesoft rubber forms a cushion and ensures a resilient pressure on thetextile material as it is fed or drawn or carried over the leather rim.-The composite annular band thus formed is adapted to be removablymounted on the periphery of a supporting member, so that renewal of theband may be readily effected when required.

In order to enable the invention to be readily understool and carriedinto effect reference will be made to the accompanying drawings in whichFigure 1 is a sectional elevation showing a roller in accordance withthese improvements with the flange plate detached.

-Figures 2 and 3 show diagrammatically the production of the leatherrim.

Figure 4 is an end elevation of Figure 1.

Figure 5 is a sideelevation of Figure 4 with the roller mounted on ashaft or spindle.

Figure 6 is a section on the line VIVl, Figure 7 and showing a mould foruse in the production of the composite band and Figure 7 is a plan viewof Figure'6, the left half being shown with parts removed.

Referring to the drawings the leather rim a is circularly cut out of aflat piece of leather, Figure 2. This annulus of leather 1s then given ahalf turn inwardly so that the then uppermost side face a and undermostside face a of the annulus become the outer and inner surfacesrespectively of the 0 leather rim as seen in Figure 3. In this way thelatter is integrally produced without the necessity for stitching orconnecting the ends of a leather strip. Theabsence of stitchingincreases the life of the ring as there 6 is no danger of the chafing ofa sewn connection whilst the production is cheapened by the eliminationof the stitching operation. The leather ring a may be rubberized orimpregnated with a rubber solution and 18 compressed. Owing to thelatter, operation, a cheap kindof leather may be employed as thepressure produces a desirably smooth outer surface, on the leather as isnecessary for the efficient spinning, drawing, twisting or pressing ofthe textile threads. Consequently the use of expensive varieties ofleather is avoided. and an important economy is effected.

The leather ring or band a is placed in a suitable mould b, Figures 6and 7 together with a suitable quantity of soft rubber to form an innersleeve 0 and finally an ebonite or hard. rubber lining d is placedinside the ring of soft rubber c. The various members a, c and at havingbeen treated with suitable solutions containing curing, vulcanizing,accelerating and other ingredients, heat is applied to the mould b, inany suitable manner so that attachmentof the parts is effected byvulcanization. The mould b suitably comprises circumferential coolingmeans such as an iron or steel ring efor the leather ring a, so that thelatter is maintained at a low temperature and is not de- 9 leteriouslyaffected by the heat of the treatment. In the construction of mouldshown, the base of the mould b is recessed at f on its upper surface toprovide a matrix for receiving the cooling ring 0 and the elements a, 0and (Z to be vulcanized. The matrix is closed by an intermediate member9 and a central core h, the rim h of which overhangs or extends over theintermediate member 9. The latter and the core h. are formed withrecesses i on their under surfaces so as to form a complementary part ofthe matrix; The-core member it may. be formed with a central hole It? sothat heat may be conveyed radially from the centre of mould whenthepartshave been connected together. This connection may be effected byshortscrew. bolts j connecting the intermediate member 9 to the base f and bylong screw-bolts j, extending from the base I) through the intermediatemember 9 and the rim 72, of the core h, so that by screwing up the boltsj and tightening up nuts i on the bolts 7'. pressure is exerted on thematerial in the matrix or mould. N aturally however any suitable poweror other means may be utilized for imparting the required pressure.

In operation the mould parts are detached and one or more steel coolingrings 6 are inserted in the mould. The leather ring a treated with anysuitable solution for ensuring effective vulcanization is then insertedwithin the steel ring or rings 6. This is followed by the application tothe inner surface of the leather ring a of uncured soft rubber 0, forexample in the form of a dough treated with a vulcanizing solu-' tion.Finally, the hard rubber ebonite, or fibre ring d is placedwithin thesoft rubber mass 0; The mould 6 is thereupon closed by the applicationand connection of the intermediate member 9 and. the core h to the basef and a downward pressure is applied tothe mould whilst heat is appliedto the mould for effecting all necessary curing of the ingredients andthe attachment of the parts by vulcanization. The heat may be appliedfrom above or below by any suitable means such as by steam orelectrically heated plates. Or the heat may be applied from. the centralhole 7L2, so that heat is transmitted radially. The duration of thetreatment is conveniently such that the leather a is not overheated bythe heat conveyed radi ally from beneath and/or the centre of the mouldand in any case the leather is maintained at a low temperature by thesurrounding steel ring or rings 6 so that injury to the leather due tooverheating is prevented. There is suitably a slight excess of ebonite,hard rubber or fibre (Z in the mould and the downward pressure on themould at the same time causes a radial pressure to be exerted outwardlyon the material by the core h. In this way the plastic bodies are curedand intimately united and a perfect adhesion is ensured. After hecompletion of the press cure in this way the mould is detached and thecomposite band composed of the rim a, soft rubber sleeve 0 and hardlining al is removed.

The band is mounted upon the periphery of a supporting member or wheeldevice is Figure 1 formed with spokes 7c, and composed wholly or partlyof any suitable material, such as wood, metal or hard rubber. One flangeplate 10 of:therim-Zc oflthis member is may be detachable so that theband may be readily attached and removed. Consequently when a band (0,0,cl becomes worn it is necessary to discard only this worn band and toreplace freshband on the supporting member la. The band maybe attachedto the latter. in any convenient manner. Thus as in the constructionslrownthe detachable plate 10 and the'band may be held in position byscrew bolts Z secured to the fixed flange k ofithe supporting member 7aand passing through holesin the ebonite, hard rubber, or fibre lining dofthe band.

Naturally various modifications may be made in the process'ofmanufacturewhilst the construction of the supporting member may be varied withoutdeparting from the spirit of the invention.

I claim 1. A roller for textile machinery com- I prising a continuousstitchless leather rim,

an inner sleeve of soft rubber, and a lining of hard rubber, said partsbeing united by vulcanizing under heat and pressure.

2. A roller for textile machinery comprising a continuous annularleather cut and half-turned from a flat pieceof leather, and an innersleeve of soft rubber, said rim and sleeve being united by vulcanizingunder heat and pressure. '1

3. A roller for textile machinery comprising a composite band composedof a leather rim, an inner sleeve of soft rubber and a lining of hardmaterial, said parts being intimately united by a vulcanization process,a wheel device, said band being mountable on the periphery of saidwheel, and a detachable flange attachable to said Wheel for holding saidband in. position.

4. A roller for textile machinery comprising a composite band composedof a con- 6. A roller for textile machinery comprising a continuousjointless cylindrical leather rim, the outer surface of the leather fromwhich the said rim is made comprisin one of the cylindrical surfaces, aninner s eeve of soft rubber, said. rim and sleeve being united byvulcanizing under heat and pressure.

HENRY MOGHEE.

